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use geometric series formula #470

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use geometric series formula #470

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etienneld
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@etienneld etienneld commented Oct 3, 2024 •
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bdon commented Oct 3, 2024

Any description? Can you include the comparison here? #134

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etienneld commented Oct 3, 2024 •
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Hi Brandon, this PR refactors tzValues calculation to leverage geometric series formula

  • Replaced the manual lookup table for tzValues with a direct formula based on the properties of a geometric series.
  • The formula (4^z - 1) / (4 - 1) efficiently computes the same values, eliminating the need for a hardcoded array.
  • This approach simplifies code maintenance.

https://www.wolframalpha.com/input?i=Sum%5B2%5Ei+*+2%5Ei%2C+%7Bi%2C+0%2C+n+-+1%7D%5D

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This change focuses on maintainability rather than performance optimization.

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@etienneld @bdon